Weather in September
Temperature
The onset of September in Suwalki brings a small change in high-temperatures, falling from an agreeable 21.4°C (70.5°F) in August to a comfortable 16.4°C (61.5°F). During September nights, Suwalki witnesses a consistent average temperature of 7.2°C (45°F).Humidity
In September, the average relative humidity is 80%.Rainfall
In Suwalki, during September, the rain falls for 13 days and regularly aggregates up to 53mm (2.09") of precipitation. In Suwalki, during the entire year, the rain falls for 169 days and collects up to 603mm (23.74") of precipitation.Daylight
In Suwalki, Poland, the average length of the day in September is 12h and 42min.On the first day of September in Suwalki, sunrise is at 05:37 and sunset at 19:18. On the last day of the month, sunrise is at 06:29 and sunset at 18:06 CEST.
Sunshine
The average sunshine in September is 5h.Frequently asked questions
What is the temperature in September in Suwalki?
What is the average humidity in September in Suwalki?
How many days does it rain in September in Suwalki?
What is the average length of the day in September in Suwalki?
When are sunrise and sunset in September in Suwalki?
How long on average sun shines in September in Suwalki?
Average temperature in September
Suwalki, Poland
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in September: 7.2°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-6.6°C).
Average humidity in September
Suwalki, Poland
- Average humidity in September: 80%
The month with the highest relative humidity is December (86%).
The months with the lowest relative humidity are May and June (77%).
Average rainfall in September
Suwalki, Poland
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is June (78mm).
The driest month (with the least rainfall) is February (25mm).
Average rainfall days in September
Suwalki, Poland
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is October (16 days).
The months with the least rainy days are April and May (12 days).
Average daylight in September /
Average sunshine in September
Suwalki, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 5h and 0min
The month with the most sunshine is June (Average sunshine: 7h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Suwalki, Poland
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